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Transcript
BU508AF
High voltage NPN power transistor for standard
definition CRT display
Features
■
State-of-the-art technology:
– Diffused collector “Enhanced generation”
■
Stable performances versus operating
temperature variation
■
Low base-drive requirement
■
Tight hFE range at operating collector current
■
High ruggedness
■
Fully insulated power package U.L. compliant
3
1
2
ISOWATT218FX
Applications
■
Horizontal deflection output for CRT TV
■
Switch mode power supplies for CRT TV
Figure 1.
Internal schematic diagram
Description
The BU508AF is manufactured using diffused
collector in planar technology adopting new and
enhanced high voltage structure for updated
performance to the horizontal deflection stage.
Table 1.
Device summary
Order code
Marking
Package
Packaging
BU508AF
BU508AF
ISOWATT218FX
Tube
August 2007
Rev 2
1/11
www.st.com
www.bdtic.com/ST
11
Content
BU508AF
Content
1
Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1
Electrical characteristics (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2
Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2/11
www.bdtic.com/ST
BU508AF
1
Electrical ratings
Electrical ratings
Table 2.
Absolute maximum rating
Symbol
Parameter
Value
Unit
VCES
Collector-emitter voltage (VBE = 0)
1500
V
VCEO
Collector-emitter voltage (IB = 0)
700
V
VEBO
Collector-base voltage (IC = 0)
9
V
Collector current
8
A
Collector peak current (tP < 5ms)
15
A
Base current
4
A
PTOT
Total dissipation at Tc = 25°C
50
W
Vins
Insulation withstand voltage (RMS) from all three leads to
external heatsink
2500
V
Tstg
Storage temperature
IC
ICM
IB
-65 to 150
°C
TJ
Max. operating junction temperature
Table 3.
Symbol
150
Thermal data
Parameter
Rthj-case Thermal resistance junction-case _______________max
Value
Unit
2.5
°C/W
3/11
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Electrical characteristics
2
BU508AF
Electrical characteristics
(Tcase = 25°C unless otherwise specified)
Table 4.
Symbol
Electrical characteristics
Parameter
ICES
Collector cut-off current
(VBE =0)
IEBO
Emitter cut-off current
(IC =0)
Collector-emitter
VCEO(sus) (1) sustaining voltage
(IC =0)
Test conditions
VCE = 1500V;
TC= 125°C
VEB = 9V
IC = 100mA
IC = 4.5A
IB = 1.6A
VBE(sat) (1)
Base-emitter saturation
voltage
IC = 4.5A
IB = 2A
IC = 0.1A
VCE = 5V
IC = 4.5A
VCE = 5V
IC = 4.5A
IB(on) = 0.5A
ts
tf
Inductive load
Storage time
Fall time
Max.
Unit
0.2
2
mA
mA
1
mA
700
Collector-emitter
saturation voltage
DC current gain
Typ.
VCE = 1500V
VCE(sat) (1)
hFE (1)
Min.
V
10
5
VBE(off) = -2.7V fh = 16KHz
LBB(off) = 4.5µH
1. Pulsed: Pulse duration = 300 ms, duty cycle 1.5 %
4/11
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1
V
1.1
V
30
2.5
0.2
µs
µs
BU508AF
2.1
Electrical characteristics
Electrical characteristics (curves)
Figure 2.
Safe operating area
Figure 3.
Derating curve
Figure 4.
DC current gain
Figure 5.
DC current gain
Figure 6.
Collector-emitter saturation
voltage
Figure 7.
Base-emitter saturation
voltage
5/11
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Electrical characteristics
Figure 8.
Output characteristics
6/11
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BU508AF
BU508AF
2.2
Electrical characteristics
Test circuits
Figure 9.
Power losses and inductive load switching
Figure 10. Reverse biased safe operating area
7/11
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Package mechanical data
3
BU508AF
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect. The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com
8/11
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BU508AF
Package mechanical data
ISOWATT218FX mechanical data
Dim.
Min.
A
mm.
Typ
Max.
5.30
5.70
C
2.80
3.20
D
3.10
3.50
D1
1.80
2.20
E
0.80
1.10
F
0.65
0.95
F2
1.80
2.20
G
10.30
11.50
G1
5.45
H
15.30
15.70
L
9
10.20
L2
22.80
23.20
L3
26.30
26.70
L4
43.20
44.40
L5
4.30
4.70
L6
24.30
24.70
L7
14.60
15
N
1.80
2.20
R
3.80
4.20
Dia
3.40
3.80
7627132 B
9/11
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Revision history
4
BU508AF
Revision history
Table 5.
Document revision history
Date
Revision
Changes
02-Mar-2007
1
Initial release
14-Aug-2007
2
Complete document, added all curves (2.1: Electrical characteristics
(curves)
10/11
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BU508AF
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